Bosch Plena 480 Watt Power Amplifier

Reference: LBB 1938/20

Condition: New product

Bosch LBB 1938/20 is a powerful 480W power amplifier, in a 3U high 19" case for rack mounting or desktop use. LEDs on the front panel show the status of the amplifier: power, audio output level, and supervised functions. This high-performance unit fulfils a wide range of PA requirements at a surprisingly low cost. Huge power for any commercial PA systems application.

The amplifier is protected against overload and short circuits. A temperature-controlled fan ensures high reliability at high output levels and low acoustic noise at lower output levels. An overheat protection circuit switches off the power stage and activates an LED on the front panel, if the internal temperature reaches a critical limit due to poor ventilation or overload.

The unit operates both on mains power and on a 24 V battery power supply for emergency back up, with automatic switchover.

Input

The system has two balanced inputs with priority control, each with a loop-through facility. This makes it easy to connect remote systems that require priority control. An additional 100 V line input is provided to connect the amplifier to a 100 V loudspeaker line, to provide more power to remote locations.

The LBB 1938-20 has two separate priority controlled 100 V outputs for zones that only need announcements made via the priority input, and for zones that will not get any announcements made via the priority input.

Operating temperature

-10°C to +55°C

Weight

25Kg

Mounting

Stand-alone, 19" rack

Dimensions

145x430x370mm

Max Power

990 W

Loudspeaker outputs

2

Line loop-through output

2

Input

100 V

Line Inputs

2

Frequency Response

50 Hz to 20 kHz (+1/-3 dB @ -10 dB ref. rated output)

Output Power

480 W / 720 W

Power Consumption

2200 VA

Inrush Current

19 A

Voltage

230 VAC ±10%, 50/60 Hz

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Bosch Plena 480 Watt Power Amplifier

Bosch LBB 1938/20 is a powerful 480W power amplifier, in a 3U high 19" case for rack mounting or desktop use. LEDs on the front panel show the status of the amplifier: power, audio output level, and supervised functions. This high-performance unit fulfils a wide range of PA requirements at a surprisingly low cost. Huge power for any commercial PA systems application.